US3278320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1965-08-11
•
Granted: 1966-10-11
•
Expires: 1985-08-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Neely
- 👤 Jacques R Martinet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:41
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/42; C04B35/03; C04B35/12; C04B35/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
REFRACTORY COMPOSITION CONSISTING ESSENTIALLY OF NONACID REFRACTORY PARTICLES CHOSEN FROM THE GROUP CONSISTING OF MAGNESIA, CHROMITE, AND MIXTURES OF MAGNESIA AND CHROMITE, FROM 1% TO 5% OF AT LEAST ONE BONDING AGENT CHOSEN FROM THE GROUP CONSISTING OF ALKALI METAL TRIPOLYPHOSPHATE AND TETRA-ALKALI METAL-PYROPHOSPHATE, FROM 0% TO 3% PLASTICIZING AGENT, AND FROM 0% TO 3% ADDED FINELY DIVIDED IRON OXIDE.
Claim 2
Dependent Claim
60 words
REFRACTORY COMPOSITION CONSISTING ESSENTIALLY OF NONACID REFRACTORY PARTICLES CHOSEN FROM THE GROUP CONSISTING OF MAGNESIA, CHROMITE, AND MIXTURES OF MAGNESIA AND CHROMITE, FROM 1% TO 5% OF AT LEAST ONE BONDING AGENT CHOSEN FROM THE GROUP CONSISTING OF ALKALI METAL TRIPOLYPHOSPHATE AND TETRA-ALKALI METAL-PYROPHOSPHATE, FROM 0% TO 3% PLASTICIZING AGENT, AND FROM 0% TO 3% ADDED FINELY DIVIDED IRON OXIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |